Indium tin oxide (ITO) is a transparent conducting material made from a mixture of indium oxide and tin oxide. It is widely used in electronic devices, such as touchscreens and flat-panel displays, due to its excellent electrical conductivity and optical transparency. ITO is often applied as a thin film on glass or plastic substrates, allowing light to pass through while enabling the flow of electricity. This unique combination of properties makes it essential in various applications, including solar cells, LED lighting, and smart windows.